#include <stdio.h>


int main(void)
{
    char grade = 'A';
    switch (grade){
        case 'A':
            printf("Excellent!\n");
            break;
            
        case 'B':
            printf("Good!\n");
            break;
            
        case 'C':
            printf("Fair!\n");
            break;
    
        default:
            printf("Poor!\n");
            break;
    }

}